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| Certification Vendor: | Juniper |
|---|---|
| Exam Name: | Data Center, Professional (JNCIP-DC) |
| Exam Number: | JN0-683 |
| Passing Score: | Scaled (Approx. 650/1000) |
| Exam Format: | Multiple-choice |
| Related Certifications: | Juniper Networks Certified Professional Data Center (JNCIP-DC) |
| Certificate Validity Period: | 3 years |
| Exam Price: | $400 USD |
| Real Exam Qty: | 65 |
| Exam Duration: | 90 minutes |
| Available Languages: | English |
| Sample Questions: | Juniper JN0-683 Sample Questions |
| Exam Way: | Online-proctored or Pearson VUE testing center |
| Pre Condition: | JNCIS-DC (JN0-481) is recommended/preferred. |
| Official Syllabus URL: | https://www.juniper.net/us/en/training/certification/tracks/data-center/jncip-dc.html |
>> Latest JN0-683 Exam Guide <<
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NEW QUESTION # 113
Which three statements are correct about VXLAN control planes? (Choose three.)
Answer: A,D,E
Explanation:
* VXLAN Control Planes:
* VXLAN (Virtual Extensible LAN) uses different control planes to handle MAC learning and traffic forwarding. The control planes include multicast and EVPN (Ethernet VPN).
* Multicast and EVPN Comparison:
* Option B:Both multicast and EVPN can be used for MAC learning in a VXLAN environment.
Multicast is a more traditional approach, while EVPN is more advanced and supports distributed MAC learning.
* Option D:EVPN offers benefits such as fast convergence and rapid updates, making it more efficient and scalable for modern data center environments.
* Option E:Multicast does not require as many resources because it relies on traditional Layer 3 multicast mechanisms to distribute broadcast, unknown unicast, and multicast (BUM) traffic.
However, it can be less flexible and less scalable compared to EVPN.
Conclusion:
* Option B:Correct-Both control planes facilitate MAC learning.
* Option D:Correct-EVPN provides fast convergence and updates.
* Option E:Correct-Multicast is resource-efficient but less flexible.
NEW QUESTION # 114
Exhibit.
You want to enable the border leaf device to send Type 5 routes of local networks to the border leaf device in another data center. What must be changed to the configuration shown in the exhibit to satisfy this requirement?
Answer: D
Explanation:
In this scenario, you want the border leaf device to advertise Type 5 EVPN routes to another border leaf in a different data center. Type 5 routes in EVPN are used to advertise IP prefixes, which means that for proper route advertisement, you need to configure the correct settings within the evpn hierarchy.
Step-by-Step Analysis:
* Understanding EVPN Type 5 Routes:
* EVPN Type 5 routes are used to advertise IP prefixes across EVPN instances, which allow different data centers or networks to exchange routing information effectively.
* VRF Target Setting:
* The vrf-target configuration is crucial because it defines the export and import policies for the VRF within the EVPN instance. For EVPN Type 5 routes to be advertised to other border leaf devices, the vrf-target needs to be correctly configured under the evpn hierarchy, not just within the routing instance.
Command to solve this:
move vrf-target target:65000:1 to evpn
* Other Options:
* Option B:Adding a VLAN configuration would not address the requirement to advertise Type 5 routes.
* Option C:Adding VXLAN encapsulation may be necessary for other scenarios but does not directly address the Type 5 route advertisement.
* Option D:Changing the route-distinguisher will differentiate routes but does not impact the advertisement of Type 5 routes to other data centers.
By moving the vrf-target to the evpn hierarchy, you enable the proper route advertisement, ensuring that the Type 5 routes for local networks are shared with other data center border leaf devices. This is aligned with best practices for multi-data center EVPN implementations, which emphasize the correct placement of routing policies within the EVPN configuration.
NEW QUESTION # 115
You are using a single tenant data center with a bridged overlay architecture. In this scenario, how do hosts of the different virtual networks communicate with each other?
Answer: D
Explanation:
* Understanding Bridged Overlay Architecture:
* In a single-tenant data center using a bridged overlay architecture, virtual networks (VLANs) are typically isolated within the fabric, with traffic between these VLANs handled outside the fabric.
* Communication Between Different Virtual Networks:
* A. off-fabric using an external device:This is correct. In many bridged overlay architectures, communication between different virtual networks is handled off-fabric, often using an external router or firewall that connects the different VLANs. The fabric itself primarily provides Layer 2 connectivity within each VLAN, leaving inter-VLAN routing to be handled externally.
Data Center References:
* This design is common in smaller or simpler data center environments where a single tenant does not require complex on-fabric routing and prefers to handle inter-VLAN routing through dedicated devices.
NEW QUESTION # 116
Due to heavy congestion, some VXLAN packets are being lost. In this scenario, which two statements are correct? (Choose two.)
Answer: A,C
Explanation:
VXLAN encapsulation is carried over UDP and does not include any built-in acknowledgement or retransmission mechanism. When packets are lost in transit, recovery is handled by the transport/application behavior of the endpoints (for example, TCP at the hosts detects loss and triggers retransmission).
NEW QUESTION # 117
You are asked to build out the VXLAN control plane.
In this scenario, which two protocols provide this capability? (Choose two.)
Answer: C,D
Explanation:
MBGP (Multicast BGP): MBGP is used to advertise VXLAN information across the control plane, specifically for multicast-based VXLAN deployment. It helps in distributing VXLAN Network Identifiers (VNIs) and other relevant information in an efficient manner across the network.
PIM-SM (Protocol Independent Multicast - Sparse Mode): PIM-SM is used to build multicast distribution trees in VXLAN flood-and-learn mode or when multicast-based VXLAN control planes are used.
NEW QUESTION # 118
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